Anyone provide me way, I can use HTML5 LocalStorage to use in Javascript to maintain session between server and client to keep track of session Timeout which will redirect the all tabs or pages in session Expired page.
Is there any way(Other than this) i can maintain session across the page/tabs under same domain to keep track of Session Timeout.
Thanks in Advance
You have not posted any code so the only think I can do for you is just show you a generic example which may not completely suit your requirement but will give an idea on how you could do it:
// show last settings pane if it's set
if ( localStorage.activePill ) {
$('.nav-pill-control > li').removeClass('active');
$('.nav-pill-control > li > a[href="' + localStorage.activePill + '"]').parent().addClass('active');
$('.nav-pill-pane').hide();
$(localStorage.activePill).show();
}
The sessionStorage object is equal to the localStorage object, except that it stores the data for only one session. The data is deleted when the user closes the specific browser tab.
In HTML5 you can use session to pass object from page to another:
// Save data to sessionStorage
sessionStorage.setItem('key', 'value');
// Get saved data from sessionStorage
var data = sessionStorage.getItem('key');
// Remove saved data from sessionStorage
sessionStorage.removeItem('key')
More Information
Related
I am creating a shopping cart.
Basically, when I reload the page with the products in my cart, the local storage doesn't refresh, which is what I want.
But I also want it to refresh at some point only (when I open another page). How do I get the local storage to refresh completly?
localStorage.clear()
The clear() method of the Storage interface clears all keys stored in a given Storage object.
for example
//feeds storage
localStorage.setItem('foo', 'bar');
localStorage.setItem('john', 'wick');
localStorage.setItem('joe', 'doe');
//lets get the value bar from the localStorage
console.log(localStorage.getItem('foo'))//outputs 'bar'
//clears all data
localStorage.clear();
//now if you try to do it again after you clear it will print null
console.log(localStorage.getItem('foo'))//outputs null
You can use session storage if you want to delete data anytime user closes the tab, localStorage does not refresh on page refresh or anything like that, what you have to do is use setItem on same key you were using before and pass new or updated data(data you want to change)
localStorage.setItem("same-object-key-you-have-used-before",data);
by doing this data(updated one) will be stored in localStorage
I have below scenario
Page 1 has a link, when user clicks on it, it gets navigated to portal page with page reload. So just before navigation, a JSON object is created
The size of this object comes around 4KB roughly.
Sample object
let obj = {
"date":"12/31/2018",
"year":"2019",
"zip":"93252",
"members":[
{
"sdf":true,
"age":21,
"fdssss":false,
"aaaa":false,
"fdss":null,
"fsdfsd":[
"ADULT"
]
},
{
"sdf":true,
"age":21,
"fdssss":false,
"aaaa":false,
"fdss":null,
"fsdfsd":[
"ADULT"
]
}
}
There is a back link from that portal page, on clicking page will be navigated back to Page 1 with a page reload.
So when the page is navigated back, I need the created JSON object back again. I need it only for that session or the data should be persistent even if the page is reloaded.
Do I have to use localStorage? If i store the object in localStorage, at what point i should clear the storage? How should I handle between different users?
Do I have to use sessionStorage? what will be the scope of the data availability
I'm using AWS service.
Q1:
you can have localStorage, and you should handle it at the code when first page loaded and you can delete it when user do signout or login, storage is about browser not user, if there are some users behind one computer at different times you must clear all data manually.
Q2:
you can also have sessionStorage, per tab and will be removed by closing browser.
in details:
This is depends on your scenario which means localStorage used for long time but sessionStorage used when you need to store something temporary.
but the important thing about sessionStorage is that it is exist per tab if you close tab and windows the sessionStorage completely removed, it used for critical data such as username and password whereas localStorage is used to shared data whole the browser.
localStorage has no expiration date, and it gets cleared only by code, or clearing the browser cache or locally stored data whereas sessionStorage object stores data only for a session, meaning that the data is stored until the browser (or tab) is closed.
at the end I suggest you to use localStorage because you may want to share that data whole the browser event after closing browser and you can store more data, in the other side there are limitation about them, when you are used storage you should handle them manually and take care.
suppose:
function removeStorage()
{
var obj = localStorage.getItem('obj');
if(obj !== null)
localStorage.removeItem('obj')
}
and in login or logout success action call removeStorage() and in Page1 load have something like below:
var obj = localStorage.getItem('obj');
if(obj !== null)
{
....
//show the obj in label or do what you want with it
...
}
I have following JavaScript code in the Layout-Page of my ASP.NET MVC application to store a browser wide Id for an user as a cookie so I can access information in the session on server-side for the respective user.
if (sessionStorage.getItem("TestWindowId") == null) {
sessionStorage.setItem("TestWindowId", "#Guid.NewGuid().ToString("N")");
$.removeCookie("Test_Cookie");
storeWindowIdInBrowserWideCookie();
window.location=document.URL;
}
if ($.cookie("Test_Cookie") !== sessionStorage.getItem("TestWindowId")) {
$.removeCookie("Test_Cookie");
storeWindowIdInBrowserWideCookie();
window.location=document.URL;
}
function storeWindowIdInBrowserWideCookie() {
var cookieValue = sessionStorage.getItem("TestWindowId");
if (cookieValue != null) {
$.cookie("Test_Cookie", cookieValue);
}
}
In most cases this works.
But in some random cases for some users the sessionStorage.getItem("TestWindowId") returns null on the same browser tab it was definitely set before. In those cases I lose the Id and although the connection to the user information on server-side. According to my logs the sessionStorage item was set and in a callback call within the same second the sessionStorage of the same browser tab was null again.
What can cause the sessionStorage on client-side to lose items?
Or is there a error in my logic?
UPDATE:
There was a problem in my thinking pattern. The problem is not that the sessionStorage item was deleted but that the wrong cookie value was sent with the request to the server.
I opened another ticket since the question differs:
Store browser window specific id in cookie
As per the docs.
sessionStorage is similar to Window.localStorage, the only difference is while data stored in localStorage has no expiration set, data stored in sessionStorage gets cleared when the page session ends. A page session lasts for as long as the browser is open and survives over page reloads and restores. Opening a page in a new tab or closing window will cause session storage to expires.
So it may happen that client has closed the browser or open it in a new tab.
how to localhost saved values check using java script,Button on click based saving one value,after page refresh want to check check value save,How to check
Dear you can use SESSION variable for it. You can store checked checkbox value in an index on array and that array stored in Session Variable. So by this way you will get all checked values and can use anywhere.
What is HTML5 Web Storage?
With HTML5, web pages can store data locally within the user's browser.
Earlier, this was done with cookies. However, Web Storage is more secure and faster. The data is not included with every server request, but used ONLY when asked for. It is also possible to store large amounts of data, without affecting the website's performance.
The data is stored in name/value pairs, and a web page can only access data stored by itself.
Unlike cookies, the storage limit is far larger (at least 5MB) and information is never transferred to the server.
Example:
function getItem(key){
if (!hasLocalStorage || !key) return;
return localStorage.getItem(key);
}
function setItem(key, val){
if (!hasLocalStorage || !key) return;
localStorage.setItem(key, val);
}
function hasLocalStorage () {
return typeof window.localStorage !== 'undefined';
}
//to store an item
setItem("itemKey", "itemVal");
//to retrieve an (the above, in this case) item
var fetchItem = getItem("itemKey");
Did you try to store that value in cookies?
Let's say I have two or more tabs with a couple of inputs and textareas.
Users can fill these fields and switch tabs but I want to make sure they don't lose the data in the fields.
Here comes the question: how would you save the data when the users switch between tabs?
Now I solved this problem by storing the data in variables, specifically in object literal (Javascript), but it is such a mechanical way to do it.
Of course I could push the data in a database.
I am using Javascript plus jQuery. I would really like to think of a good way to solve this kind of problem.
You can use localStorage.
Just set the values you want to store by:
localStorage.setItem(key, stringData);
To get the data:
var stringData = localStorage.getItem(key);
To delete:
localStorage.removeItem(key);
That way the data is stored locally in the user's browser. User can also come back later and data will still be there.
You can synchronize the tabs by listening the storage event:
window.addEventListener('storage', updateStorage, false);
function updateStorage(e) {
if (e.newValue === null) {
localStorage.removeItem(e.key);
} else {
localStorage.setItem(e.key, e.newValue);
}
}
The storageevent is only throw to the inactive tabs so they can update the isolated copy of the localStorage.
If you only need to store the data for a session you can use sessionStorage instead.
For more on localStorage:
http://www.w3.org/TR/2013/PR-webstorage-20130409/